Honestly, it's the other way around.I don't think Fury is universally hated. Threshold takes that spot. I think there are select few who hate Fury.
During all those years I've encountered very few people who likes that episode. Most of them have been rabid Kes-haters.
On the other hand, I've encountered a lot of people who have no feelings at all for Kes and even those who strongly dislike the character who despite that hates that episode because it was so insulting ,badly written and because it's destroying a main character for no reason at all.